Andreev bound states (ABSs) in hybrid semiconductor-superconductor nanowires can have near-zero energy in parameter regions where band topology predicts trivial phases. This surprising fact has been used to challenge the interpretation of a number of transport experiments in terms of non-trivial ...
This work shows an interplay between topology and non-Hermiticity by means of nonlinear optics, and it provides a way of manipulating multiple phase transitions at high speeds that is applicable to many other materials with strong nonlinearities, which could promote the development of unconventionally ...
However, connection between such intrinsic non-Hermitian topology and Hermitian topology has remained largely elusive. Here, considering the bulk and boundary as an environment and system, we demonstrate that anomalous boundary states in Hermitian topological insulators exhibit non-Hermitian topology. We ...
Moreover, the definition of bandgap in non-Hermitian topology also needs discussion. The non-Hermitian bandgaps, i.e., the vacant regions in the complex plane, may have various geometries. There are different kinds of bandgaps and they are closely related to the topological analyzation. If a...
We review the current understanding of the role of topology in non-Hermitian (NH) systems, and its far-reaching physical consequences observable in a range of dissipative settings. In particular, we elucidate how the paramount and genuinely NH concept of exceptional degeneracies, at which both eige...
possible to observe real-time and real-space dynam-ics. Another merit is that topological photonics has opened anew f i eld of topological physics, i.e., non-Hermitian topology,nonlinear topology, and their combination. Non-Hermitianeffects are introduced by a loss and a gain of photons. On...
Zero-energy Andreev levels in hybrid semiconductor-superconductor nanowires mimic all expected Majorana phenomenology, including $$2{e}^{2}/h$$ conductance quantisation, even where band topology predicts trivial phases. This surprising fact has been used
Exceptional Points and Braiding Topology in Non-Hermitian Systems with long-range coupling 来自 arXiv.org 喜欢 0 阅读量: 4 作者:SM Rafi-Ul-Islam,ZB Siu,MSH Razo,MBA Jalil 摘要: We present a study of complex energy braiding in a 1D non-Hermitian system with $n$th order long range ...
“sasers" would have the groundbreaking potential to revolutionize sound-based imaging and detection, but would possibly also push forward new paradigms in communications. For contemporary studies in non-Hermitian topology when sound waves are considered, artificial lattices executing acoustic amplification ...
The introduction of topology in condensed-matter physicslead to the discovery of topological phase transitions and materials as topological insulators. Phase transitions in the symmetry of non-Hermitian systems describe the transition to on-average conserved energyand new topological phases. Bulk ...